function showReg(){
	document.getElementById("registerPanel").style.display="block";
	document.getElementById("loginPanel").style.display="none";
	document.title = "个人知识库--注册";
}

function hiddenReg(){
	document.getElementById("registerPanel").style.display="none";
	document.getElementById("loginPanel").style.display="block";
	document.title = "个人知识库--登陆";
}

function showPasswd(){
	document.getElementById("passwdPanel").style.display="block";
	document.getElementById("loginPanel").style.display="none";
	document.title = "个人知识库--糟糕,忘记密码了";
}
			
function hiddenPasswd(){
	document.getElementById("passwdPanel").style.display="none";
	document.getElementById("loginPanel").style.display="block";
	document.title = "个人知识库--登陆";
}